Answer
Verified
430.2k+ views
Hint: Vertebrae of the mammals consists of the 33 individuals and the interlocking bones that form the structure of the spinal segment. These vertebrae are numbered and isolated into cervical areas, thoracic areas, lumbar areas, sacrum areas, and the coccyx areas.
Complete Answer:
The initial two vertebrae of a vertebrate spine are atlas (first cervical vertebra) and axis (second cervical vertebrae).
Atlas: The atlas is the first and the principal cervical vertebra and expresses with the occiput of the head and the axis. It varies from the other cervical vertebrae in that it has no vertebral body and no spinous cycle. Rather, the chart book has horizontal masses which are associated by a front and back curve. Every horizontal mass contains a superior articular facet and an inferior articular facet.
Axis: The axis part of the vertebrae is the second vertebrae and it is easily identifiable than the other parts due to the presence of the dens which broadens superiorly from the foremost point of the vertebra. This forms the joint medial atlanto axial joint between the dens and the anterior arch of the atlas and this helps in the rotation of the head independently.
Note: The vertebral column provides support to the trunk, all the muscles attached to them. It also protects the spinal cord. This part of the body acts as the site of the haemopoiesis. Hematopoiesis is the process in which the blood cells like RBC, WBC are produced from the bone marrow.
Complete Answer:
The initial two vertebrae of a vertebrate spine are atlas (first cervical vertebra) and axis (second cervical vertebrae).
Atlas: The atlas is the first and the principal cervical vertebra and expresses with the occiput of the head and the axis. It varies from the other cervical vertebrae in that it has no vertebral body and no spinous cycle. Rather, the chart book has horizontal masses which are associated by a front and back curve. Every horizontal mass contains a superior articular facet and an inferior articular facet.
Axis: The axis part of the vertebrae is the second vertebrae and it is easily identifiable than the other parts due to the presence of the dens which broadens superiorly from the foremost point of the vertebra. This forms the joint medial atlanto axial joint between the dens and the anterior arch of the atlas and this helps in the rotation of the head independently.
Note: The vertebral column provides support to the trunk, all the muscles attached to them. It also protects the spinal cord. This part of the body acts as the site of the haemopoiesis. Hematopoiesis is the process in which the blood cells like RBC, WBC are produced from the bone marrow.
Recently Updated Pages
How many sigma and pi bonds are present in HCequiv class 11 chemistry CBSE
Mark and label the given geoinformation on the outline class 11 social science CBSE
When people say No pun intended what does that mea class 8 english CBSE
Name the states which share their boundary with Indias class 9 social science CBSE
Give an account of the Northern Plains of India class 9 social science CBSE
Change the following sentences into negative and interrogative class 10 english CBSE
Trending doubts
Which are the Top 10 Largest Countries of the World?
Difference between Prokaryotic cell and Eukaryotic class 11 biology CBSE
Fill the blanks with the suitable prepositions 1 The class 9 english CBSE
Difference Between Plant Cell and Animal Cell
Give 10 examples for herbs , shrubs , climbers , creepers
Differentiate between homogeneous and heterogeneous class 12 chemistry CBSE
The Equation xxx + 2 is Satisfied when x is Equal to Class 10 Maths
How do you graph the function fx 4x class 9 maths CBSE
Write a letter to the principal requesting him to grant class 10 english CBSE